Number: 382 - iapmoes.org

1 Number: 382 Originally Issued: 02/20/2015 Revised: 04/17/2020 Valid Through: 02/28/2021 The product described in this Uniform Evaluation Service (UES) Report has been evaluated as an alternative material, design or method of construction in order to satisfy and comply with the intent of the provision of the code, as noted in this report, and for at least equivalence to that prescribed in the code in quality, strength, effectiveness, fire resistance, durability and safety, as applicable, in accordance with IBC Section This document shall only be reproduced in its entirety. Copyright 2020 by International Association of Plumbing and Mechanical Officials.

2 All rights reserved. Printed in the United States. Ph: 1-877-4 IESRPT Fax: web: 4755 East Philadelphia Street, Ontario, California 91761-2816 USA Page 1 of 17 SACRAMENTO STUCCO CO., INC., 1550 Parkway Blvd. Sacramento, California 95691 916-372-7442 www. Western 1-Kote Exterior Stucco System ADDITIONAL COMPANY NAMES AND PRODUCT NAMES: ASH GROVE PACKAGING, Ash Grove 10809 Executive Center Drive, Ste. 321 Little Rock, Arkansas 72211 501-224-3372 One-Coat Stucco System DRYVIT SYSTEMS, INC., One Energy Way West Warwick, Rhode Island 02852 401-822-4100 Dryvit Commercial Cement Plaster (CCP) System STO CORP., 3800 Camp Creek Pkwy. SW, Bldg.

3 1400, Ste. 120 Atlanta, Georgia 30331 800-221-2397 StoPowerwall Stucco CSI Sections: 09 24 00 Cement Plastering RECOGNITION Western 1-Kote Exterior Stucco System has been evaluated as an exterior wall covering in compliance with Chapters 14 and 25 of the IBC and Chapter 7 of the IRC. The Exterior Stucco System consists of cement plaster, metal or wire fabric lath, weather-resistant barrier, and backings of concrete, masonry, foam plastic insulation, gypsum board, fiberboard wood structural panel wall sheathing. The Exterior Stucco System has been evaluated for exterior durability, wind resistance, interior and exterior fire exposure, fire-resistance ratings, and installation on walls required to be of Types I, II, III, IV and V construction.

4 The Exterior Stucco Systems evaluated in this report are satisfactory alternatives to the following codes and regulations: 2018, 2015, 2012 and 2009 International Building Code (IBC) 2018, 2015, 2012 and 2009 International Residential Code (IRC) ICC-ES AC11 2019 and 2016 California Building Code (CBC) attached Supplement 2019 and 2016 California Residential Code (CRC) - attached Supplement LIMITATIONS Use of the Exterior Stucco Systems recognized in this report are subject to the following limitations: The Exterior Stucco Systems shall be installed in accordance with this report and Sacramento Stucco s published installation instructions.

5 In the event of a conflict between the manufacturer s published installation instructions and this report, this report governs. All inspections by the building official are required in IBC Section 110 or IRC Section R109, including lath inspection, shall be completed. Buildings shall be provided with braced wall lines or shear walls in accordance with the IBC or IRC. The Western 1-Kote Base Coat shall be moist-cured in accordance with the manufacturer s installation instructions and the finish coat installation instructions, but no less than 48 hours. Where foam plastic insulation is used, a thermal barrier complying with IBC Section or IRC Section R316 is required.

6 Where foam plastic insulation is used, installations shall comply with 2018, 2015 and 2009 IBC Section (2012 IBC Section ) or IRC Section , as applicable. Where applied over a wood-based sheathing, installation shall include a water-resistive barrier conforming with IBC Section or IRC Section , as applicable, and under the IBC where installed in Climate Zone 1A, 2A, or 3A, a ventilated air space shall be provided between the stucco and water-resistive barrier. The Western 1-Kote Exterior Stucco System recognized in this report is produced in West Sacramento, CA. PRODUCT USE The Exterior Stucco Systems in this report comply with Chapter 14 and Chapter 25 of the IBC and Chapter 7 of the IRC as an alternative exterior wall covering.

7 The Exterior Stucco Systems also comply with Chapter 8 of the IBC and Chapter 7 of the IRC as an interior wall covering. The Exterior Stucco Systems may be used as standard -inch ( mm) thick first and second (scratch and brown) coats complying with ASTM C926 in accordance with Sections and of the IBC. When applied in accordance with Section of this report, the Exterior Stucco Systems are a component of one-hour fire-resistance-rated exterior wall assemblies. The Exterior Stucco Systems may be applied on exterior walls of buildings of Type I, II, III or IV construction, as described in Section of this report. The manufacturer s published installation instructions shall be considered as part of this report.

8 Number: 382 Originally Issued: 02/20/2015 Revised: 04/17/2020 Valid Through: 02/28/2021 Page 2 of 17 The manufacturer s installation instructions shall be strictly adhered to and be available at the jobsite during application. Acceptable finishes for Western 1-Kote, and the products noted by the additional listees in this report, include Western Blended Products (WBP), WBP Premium Acrylic Finishes (PAF), WBP Exterior Stucco Finishes, WBP Elastomeric Paints, and WBP PAF Specialty Products. PRODUCT DESCRIPTION The Exterior Stucco Systems addressed in this report comply with Chapter 14 of the 2018, 2015, 2012 and 2009 IBC and Chapter 25 and IRC Chapter 7 as an alternative exterior wall covering.

9 The Exterior Stucco System also complies with Chapter 8 of the IBC and Chapter 7 of the IRC as an interior wall covering. When applied in accordance with the specific sections of this report, the Exterior Stucco System is a component of one-hour fire-resistance-rated exterior wall assemblies and exterior walls on buildings of Type I, II, III or IV construction, installation shall be as described in Section of this report. EXTERIOR STUCCO SYSTEM COMPONENTS Western 1-Kote Gray Concentrate and Western 1-Kote Gray Concentrate AF (Advanced Formula): The Concentrates are factory prepared, dry-blended, fiber-reinforced, modified Portland cement complying with ASTM C150.

10 The Western 1-Kote Gray Concrete and Western 1-Kote Concentrate AF are packaged in 80 lb. ( kg) bags. Western 1-Kote Gray Concentrate complies as noncombustible material in accordance with Section of the IBC. Bags shall be kept indoors or if stored outdoors, shall be adequately covered to keep dry, and shall be stored off the ground. Each bag of Western 1-Kote Gray Concentrate is mixed with two hundred pounds (approximately 16 #2 shovels) of sand and approximately 4 gallons of water. Each bag of Western 1-Kote Gray Concentrate AF is mixed with 250 pounds (approximately 20 #2 shovels) of sand and approximately gallons of water. The sand Shall be clean and free of deleterious amounts of loam, clay, silt, soluble salts and organic matter.